Fence construction



Aug. 4, 1925. 1,548,133

P. F. FROST FENCE CONSTRUCTION Filed May 1923 IN VENTOR Parmenas F firstATTORNEYS,

Patented Aug. 4, 1925.

UNITED STATES PATENT OFFICE.

' PARMENAS r. FROST, or MOUNT VERNON, NEW YORK.

FENCE CONSTRUCTION.

others skilled in the art to which it appertains to make and use thesame.

This invention relates to fences and more particularly to that class offence commonly known in the trade as non-climbable fence.

It has heretofore been common practice in connection with fences of wiremesh and other construction toemploy one or more strings of barbed wireat the top of the fence for the purpose of preventing persons fromclimbing over the fences, or if not positively preventing them to atleast deter them. The ordinary barbed wire heretofore employed has beenobjectionable as unsightly and as not being strong or permanent enoughto meet the requirements.

The objects of the present invention are to provide an improved type offlexible barbed or pronged device for use in connection with fences; toprovide a device which is strong and at the same time -flexible; toprovide a device embodying neatness of appearance and at the same timeeconomical to manufacture; to enable the device to provide a pluralityof barbs or prongs so as to be effective and at the same time of suchstructure. as not to materially increase the cost by the use of theprongs.

Referring to the accompanying drawing in which like numerals ofreference indicate similar parts throughout the several views.

Figure 1 is an elevation of a fence embodying the present invention;

Figure 2 is a detail view in elevation of a portion of the flexibledevice;

Figure 3 is a cross sectional view on line 3-3 of Fig. 2.

In the specific embodiment of the invention illustrated in said drawing,the reference numeral 1 indicates in general the fence consisting ofsuitable post 2 for supporting the same, wire mesh 3 and flexible device4. As shown in Fig. 1 the said flexible member 4 is preferablypositioned along the top of the fence and carried by posts 2 forpreventing or deterring persons from getting over the fence.

Application filed May 5, 1923. Serial No. 636,911.

The flexible device 4 is preferably constructed in the nature of achain. Referring to Figs. 2 and 3, it is to be noted that the saidflexible device or chain consists of a plurality of links 5, said linkseach consisting of loops 6 and 7 arranged transversely to each other.Preferably the link 5 consists of an integral piece of wire which formsboth of saidloops 6 and 7. By means 'of' .this construction the severallinks may be interengaged so as to position them all alike in the seriesor chain and thereby obtain a symmetrical and neat appearance.

The ends of the wire comprising each link 5 are preferably constructedto constitute barbs or prongs 8, 9. By reference to the drawings it willbe seen that the end of the wire forming one loop projects slantinglythrough the other loop and provides a pointed end at a distance from theplane of the second loop so as to be in position to readily engageapersons clothing in endeavoring to pass by the chain close to it. Thearrangement is such that prong 8 of one link is directed transverselywith respect to the other prong 9 of the same link, and in this way eachlink will provide prongs trans-verse to each other so as to insureengagement of one or the other should some one endeavor to pass close tothe chain.

In carrying out my invention I prefer to construct all of the linksalike, so as to make assembly very simple and also to increase theetficiency of the chain as a means of preventing persons from passingover the same. However it is to be understood that it is within thescope of the present invention to vary this construction, it not beingconsidered that the present invention is necessarily restricted to eachof the links being alike or each of the links being arranged the same asall other links.

Having thus described my invention, I claim- A link for a barbed chaincomprising a wire bent to form a pair of loops arranged in differentplanes, the wire terminals being directed towardthe opposite ends of thelink and at an angle to the respective loops and themselves, the saidterminals extending through the opposite loops and constituting barbs. I

In testimony whereof I aflix my signature.

PARMENAS F. FROST.

